linux-kernel - RE: [PATCH 1/3] PCI: pcie-rcar: Convert to DT resource parsing API

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Date:	Mon, 9 Nov 2015 09:31:17 +0000
From:	Phil Edworthy <phil.edworthy@...esas.com>
To:	Wolfram Sang <wsa@...-dreams.de>
CC:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Simon Horman <horms@...ge.net.au>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-sh@...r.kernel.org" <linux-sh@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/3] PCI: pcie-rcar: Convert to DT resource parsing API

Hi Wolfram,

On 07 November 2015 13:29, Wolfram wrote:
> On Mon, Nov 02, 2015 at 04:36:13PM +0000, Phil Edworthy wrote:
> > The main purpose of this change is to avoid calling pci_ioremap_io() as
> > this is not available on arm64. However, instead of doing the range passing
> > in this driver we can utilise of_pci_get_host_bridge_resources().
> >
> > This is similar to changes made to the generic PCI host driver in commit
> > dbf9826d "PCI: generic: Convert to DT resource parsing API".
> >
> > Signed-off-by: Phil Edworthy <phil.edworthy@...esas.com>
> 
> Reported-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> Tested-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> 
> Works for me and my USB3 card. I also like going the global io_offset
> variable away and the code readability improved, too, IMO.
> 
> One question:
> 
> 
> > +		case IORESOURCE_MEM:
> > +			parent = &iomem_resource;
> > +			res_valid |= !(res->flags & IORESOURCE_PREFETCH);
> > +			break;
> 
> res_valid doesn't seem to be actually used?
Ah, you are right. I'll remove this & send a v2

Thanks
Phil
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